Energy Converter From To joule [J] kilojoule [kJ] kilowatt-hour [kW*h] watt-hour [W*h] calorie (nutritional) horsepower (metric) hour Btu (IT) [Btu (IT), Btu] Btu (th) [Btu (th)] gigajoule [GJ] megajoule [MJ] millijoule [mJ] microjoule [µJ] nanojoule [nJ] attojoule [aJ] megaelectron-volt [MeV] kiloelectron-volt [keV] electron-volt [eV] erg gigawatt-hour [GW*h] megawatt-hour [MW*h] kilowatt-second [kW*s] watt-second [W*s] newton meter [N*m] horsepower hour [hp*h] kilocalorie (IT) [kcal (IT)] kilocalorie (th) [kcal (th)] calorie (IT) [cal (IT), cal] calorie (th) [cal (th)] mega Btu (IT) [MBtu (IT)] ton-hour (refrigeration) fuel oil equivalent @kiloliter fuel oil equivalent @barrel (US) gigaton [Gton] megaton [Mton] kiloton [kton] ton (explosives) dyne centimeter [dyn*cm] gram-force meter [gf*m] gram-force centimeter kilogram-force centimeter kilogram-force meter kilopond meter [kp*m] pound-force foot [lbf*ft] pound-force inch [lbf*in] ounce-force inch [ozf*in] foot-pound [ft*lbf] inch-pound [in*lbf] inch-ounce [in*ozf] poundal foot [pdl*ft] therm therm (EC) therm (US) Hartree energy Rydberg constant joule [J] kilojoule [kJ] kilowatt-hour [kW*h] watt-hour [W*h] calorie (nutritional) horsepower (metric) hour Btu (IT) [Btu (IT), Btu] Btu (th) [Btu (th)] gigajoule [GJ] megajoule [MJ] millijoule [mJ] microjoule [µJ] nanojoule [nJ] attojoule [aJ] megaelectron-volt [MeV] kiloelectron-volt [keV] electron-volt [eV] erg gigawatt-hour [GW*h] megawatt-hour [MW*h] kilowatt-second [kW*s] watt-second [W*s] newton meter [N*m] horsepower hour [hp*h] kilocalorie (IT) [kcal (IT)] kilocalorie (th) [kcal (th)] calorie (IT) [cal (IT), cal] calorie (th) [cal (th)] mega Btu (IT) [MBtu (IT)] ton-hour (refrigeration) fuel oil equivalent @kiloliter fuel oil equivalent @barrel (US) gigaton [Gton] megaton [Mton] kiloton [kton] ton (explosives) dyne centimeter [dyn*cm] gram-force meter [gf*m] gram-force centimeter kilogram-force centimeter kilogram-force meter kilopond meter [kp*m] pound-force foot [lbf*ft] pound-force inch [lbf*in] ounce-force inch [ozf*in] foot-pound [ft*lbf] inch-pound [in*lbf] inch-ounce [in*ozf] poundal foot [pdl*ft] therm therm (EC) therm (US) Hartree energy Rydberg constant